Channeling-machine.



F. E. BERTRAND. CHANNELING MACHINE. APPLICATION FILED NOV. 19, 1909.

l 1,030 705 I Patented June 25, 1912.

2 SHEETSSHEET 1.

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I. E. BERTRAND.

OHANNELING MACHINE.

- AYPLIOATION FILED NOV.'19, 1909.

1,030,705 Patented June 25, 1912.

2 SHEETS-SHEET 2.

h i'l'rzesses: fravenz'arr WNIIED STATES PATENT OFFICE;

FREDERIC E. BERTBAND, OF SWAMPSCO'IT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CHANNELING-MACI-IINE.

Specification of Letters Patent.

Patented J une 25, 1912.

lb all wlz 0m it may concern:

Be it known that I, FRnonRIc E. BER- TRAND, a citizen of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Channeling-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to channeling machines and more particularly to channeling machines for turn work.

The invention is particularly adapted for use in cooperation with that type of channcling machine employing a step by step feed, in which the knives are constructed and arranged to make the cut by a movement in the line of feed while the sole is held from movement. As the angular movement imparted to the sole, in operating on the curved parts of the margin of the sole, takes place about thepoint of the channel knife as a center and during its movement in the line of feed, the edge gage should be retained at all times in a position sub stantially opposite the channel knife and close to the edge knife so that it will not hinder the turning of the sole and will not permit a variation in the margin of cut, as would be the case if the edge gage remained in a fixed position and it were attempted to turn the sole about the channel knife while the knives were at one point in the line of feed and the edge gage was at'another point distant therefrom. In the type of channeling machine referred to, in order to maintain a proper -relation between the gage and knives, the edge gage is mounted for a movement in the line of feed with the knives.

In a channeling machine employing a step by step feed and a channeling knife reciprocating in the line of feed and cutting on one of the strokes of its reciprocations, owing to the shape of' a sole, the line of directionin which the cutter operates will not always be parallel to the edge of the sole. \Vhere the curvature of the sole edge is pronounced, if the gage be given a movement parallel to the movement of the cutter the inclination of the sole edge to the line of feed will cause the gage to crowd against the sole on the cutting stroke with the result that, if the stock is hard, the sole will be forced acrossthe line of feed by the pres- 1 sure placed upon it thus roughing the flesh teristics in this class of soles are desirable.

Vhen operating upon this class of soles with the type of machine referred to, it is ordinarily practicable tomove the edge gage in a line parallel to the line of movement of the cutter as the stock will merely yield to the pressure of the gage as the gage crowds upon it and will thereafter resume its original shape. Where the stock is hard, however, the undesirable results above mentioned will be present if the parallel movement of the gage is used. This is true in operating upon stock for turn work which must necessarily be hard as it is used for outsoles.

One of the objects of the present invention is to provide a machine, of the type referred to, capable of operating on the hardest stock desired to be used without interfering with the proper operation of the knife or placing an undue strain upon the edge gage. IVith this object in view a feature of the invention contemplates the provision of a relative movement between the edge gage and the work retainer, across the line of feed in addition to their relative movement in the direction of feed. The construction and ar rangementis such that the distance between the gage and retainer across the line of feed is increased at the time the relative movement in the direction of feed causes the gage to assume a position where it would crowd against the edge of the sole.

In the construction, which forms the sub ject matter of the present invention, for securing this result the work retainer is made the movable member across the line of feed of the work. To this end the portion of the work retainer, which engages the sole being operated upon, is so mounted that it will move with the sole whenever the sole is caused to move across the line of feed by reason of its crowding against the edge gage as it is fed through the machine. In one form of the invention the Work retainer bar is pivotally mounted by its upper end, for an in-and out movement, on the vertically movable slide through which it is actuated. In another form of the inventic-n the work retainer bar is provided with a vertical movement only but its foot is mounted in a guideway, transverse to the line of feed, formed at the lower end of the bar. In both forms of the invention the inwardly and outwardly movable part is held yieldingly in its inner position against a suitably arranged stop. In both forms of the invention the sole engaging portion of the work retainer is permitted a movement transversely, or across the line of feed, relatively to the edge gage. Either construction prevents undue strain on the edge gage and maintains an unroughed surface on thesole. In addition to these desirable effects by means of the present in vention, the sole is maintained in such a relation to the edge gage as to provide for a proper location of the cut by the knife, or knives, relative'to the sole edge.

Broadly considered, the features of the invention are not limited to use with the particular type of channeling machine hereinbefore described, although such machine is the simplest and most efficient channeling machine at present known to the applicant. As will be apparent to those skilled in the art, a crowding of the sole against the edge gage can occur in a channeling machine wherein the gage has no movement in the line of feed or in a channeling machine of -the drag knife type employing a fourmotion or other well known type of feed. It should be distinctly understood, therefore, that, except as specifically defined in the claims, the features of the invention herein described are not limited in the scope oftheir application to any particular type of channeling machine. I

In the embodiment of the invention illustrated in the drawings Figure 1 is a righthand side elevation of one type of channeling machine provided with a work retainer mounted for an in and out movement across the line of feed;Fig. 2 is a detail, in front elevation, of the work retainer shown in Fig. 1; Fig. 3 is a plan of the parts shown in Fig. 2; Fig. 4 is a horizontal section on line 4l of Fig. 2; Fig. 5 is a diagrammatic view showing a sole in two positions as it is being operated upon, the full line position representing the sole at the c0mmencement of acut and the dot and dash line position represent-ing the sole at the completion of a cut; and Fig. 6 is a detail, in perspective, of a modified form of work retainer foot.

In the embodiment of the invention illustrated in the drawings, the work table 2 is mounted upon a vertically movable support 4. This support slides in a guideway stand 10 of suitable height.

6 extending from the framework 8 of the head of the machine which rests upon a The channel knife and the edge, or shoulder, knife are mounted in knife blocks which are sustained at the lower ends of slides 16 and 18 respectively, which slides are yieldingly held pressed toward the work table by means of grasshopper springs 20. The channel knife block is carried on a toe 24 which projects outwardly from the slide 16. The shoulder knife block is mounted directly upon the lower end of the slide 18. The channel knife block supports an adjustable channel knife presser foot, as usual. The shoulder knife is also provided with a presser foot, as usual, which, however, is mounted for independent yielding movement relatively to the knife and its block. The slides 16 and 18 are contained within a carrier 32 which is provided at its upper end with a pair of cone bearings 34 arranged to permit a transverse swinging movement of the carrier. The slides are held within the carrier by means of a re movable cover plate 36. Toward the lower end of the carrier there is pivoted one end of a link 38, the other end of which is connected to a block within a chambered crank arm 40 mounted upon a rock shaft 42. In the rear (viewing Fig. 1) of the crank arm 4-0 is a second crank arm 44 (see dotted lines) provided with a cam roll 46 which engages a groove cam in a disk 48 mounted upon the driving shaft 50, (see dotted lines). This shaft is rotated by means of a sheave 52 at one end over which runs a rope belt connecting it to any suitable source of power. The other end of the driving shaft 50 is provided with an eccentrically arranged pin 56 which operates in a horizontal slot in the back of a slide 58 mounted in guides on the frame causing said slide to move vertically toward and from the surface of the work table 2. The slide 58 carries a yieldingly mounted work retainer bar 60 provided with a sole engaging portion or foot 62, to be presently described more in detail. The foot has a serrated under surface for firmly engaging the surface of the sole and holding it against movement in the line of feed.

By means'of the parts just described the work is fed and the cut is made in the following manner. As the driving shaft rotates the crank arm 44: is actuated to rock the shaft 42 and oscillate the carrier 32 with its knives and their presser feet above the work table 2. While the carrier 32 is at the right hand end of its stroke (viewing Fig. l), the eccentric pin 56 on the driving shaft operates to move the work retaining foot 62 out of engagement with the work leaving it free upon the work table except that it is held in engagement therewith by the resser feet. The cam groove in the disk 18 the n operates to rock the shaft 42 in a direction to move the carrier 32 to the left. Because of the pressure exerted upon the work by means of the edge and channel knife presser feet the work is fed, by means of the carrier movement, across the work table. lVhen the carrier has reached the limit of its stroke to the left, the eccentric pin 56 operates to move the Work retaining foot 62 downward into engagement with the work and thus hold it firmly upon the work table preventing its movement while the carrier 32 moves backwardly, or to the right. It is thus seen that in the illustrated machine, to which the present invention has been applied, as will be hereinafter explained, the work feeding means is comprised of the oscillating presser feet and the vertically reciprocating work retainer, for a feeding or progression of the sole through the machine is possible only by the combined action, as described, of all of these devices. The cutting edges of the edge and channel knives are so directed that the out is formed during this backward stroke of the carrier.

The edge gage is mounted, indirectly, upon a slide 82 (dotted lines) movable in and out, or across the line of feed, in suitable ways formed in a shelf extending beneath the machine head carried by the work table supporting slide 4:. An adjustment of the slide 82 in and out is secured by operat ing a lever 86, which is geared to the slide A suitable handle 88 and connecting mechanism is provided for this purpose. Mounted on the slide 82 is a second slide 90 (dotted lines) moving in suitable ways ex tending in the general direction of the line of feed. This slide 90 is provided with a horizontal pin 92 (dotted lines) which passes through an eye in the lower end of a vertical pin (dotted lines) which in turn extends within a socket 96 (dotted lines) formed for its reception in the lower end of the knife carrier 32. The pin 92 is of sufficient length to permit adjustment of the block 82 and edge gage 80 across the line of feed and the sliding connection 94L and 96 permits the slide 90 to be moved with the knife carrier in its oscillations in the direction of feed. The connection of the edge gage 80 to the slide 82 is through the inten mediate slide 90.

The parts just described all may be and substantially are the same as shown and described in Letters Patent of Great Britain to Alfred J. Boult, No. 3,986, dated February 17, 1910.

Referring now more particularly to Figs. 2, 3 and. 4, the work retainer bar 60 is supported in a pair of brackets 100 and 102 extending from the slide 58. The upper bracket 100 is formed as a transverse journal and has a pin 101 passed therethrough i at their rear side (as shown in Fig. 2) and the bracket 100 is cut away at its forward side (as shown in Fig. 3) so as to permit a free in and out swinging movement of the work retainer bar (50 about the pivot pin 101 as a center. About midway of its length the work retainer bar 60 is threaded for the reception of nuts 106 which bear upon the lower end of a stiff coiled spring 107 surrounding the work retainer bar' and bearing at its upper end against a collar 108 at the underside of the yoke 103. This spring determines the pressure exerted by the work retainer on the sole and the amount of pressure may be varied by an adjustment of the nuts 106. Below the threaded portion of the work retainer bar, a portion 108 (Fig. 4t) of the bar is made rectangular in cross-section and fits within a slot formed in the front of the lower bracket 102 which slot acts as a guideway for the in and out movement. of the work retainer. The lower end of the portion 108 of the work retainer bar is split and provided with a dove-tailed slot in which there fits a dove-tailed tongue 10$) (Fig. 2) at the upper end of the shank of the work retainer foot (32. The foot 02 is clamped to the lower end of the bar 60 by means of a clamping screw 110. The dovetail connection just described provides for an adjustment of the work retainer foot toward and from the sole cutting knife or knives. The lower bracket 102 is provided at each side with a boss 111 (Fig. 4:) which is drilled for the reception of set screws arranged to hold in place, at the front side of the bracket, a plate 112 provided with a recess 113. Within the inner end of the recess 113 fits the hollow circular shank 114 of a square ended plug 115. The squared end of the plug 115 fits the slot in the bracket 102. Within the hollow shank of the plug 114 there is arranged a coiled 115 spring 116 which is held in place by means of av screw plug 117 threaded into a suitably drilled projection 118 projecting from the plate 112. The plate 112 is so formed that when the parts are in the position 120 shown in Fig. 4 with the coiled spring 11.6 acting to hold the work retainer bar 00 in its innermost position against the base of the guideway which forms a stop,there is a small space between the outer face of the square ended plug 115 and the inner face of the plate 112 fitting within the slot formed in the bracket 102 for the reception of the portion 108 of the work retainer bar (see Fig. at) The utility of this construction can best be comprehended by reference to Fig. 5. As there illustrated the full line positions of the sole, the edge and channeling knives, the edge gage and the work retainer foot, indicate the relative positions of these parts at the time a cut is about to be started, when the invention is applied to the type of machine illustrated in Fig. 1. In this type of machine the edge gage is mounted to move in the line of direction indicated by the arrow (Fig. 5). It is obvious that during the movement of the edge gage while a cut is being made along the shank of the sole, as shown in Fig. 5. the gage will be hindered in its movement by the angle assumed by the edge of the sole at the shank relative to the line of movement of the edge gage. If the sole is held stationary wit-h respect to a movement across the line of feed, by means of the work retainer, a severe strain will be placed upon the edge gage as it rubs past the edge of the sole during the cutting movement of the knives. If the sole is forced outward relatively to the sole engaging portion of the work retainer. its surface will be roughed with the bad effects referred to. Both the roughing of the sole andthe excessive strain upon the edge gage during its movement with the knives as they perform their function of channeling and shouldering the sole inay be overcome by permitting both the sole and sole engaging portion of the work retainer to move outward across theline of feed, and into the position indicated by the dot and dash lines (Fig. 5), as the cut is being made. By constructing the work retainer as shown in Figs. 2, 8 and 4, such an in and out movement across the line of feed may take place. 1th the work retainer mounted as described, in operating at the shank of the sole as the edge gage moves in the direction indicated by the head arrow (Fig. it will, instead of crowning and jamming against the edge of the sole, move the sole and the work retainer with it across the top of the work table against the force of the coiled spring 116 and in a direction trans verse to the line of feed. As the presser feet have only a frictional engagement with the sole it easily swings beneath these feet as it moves outward from the edge gage, pivoting on the channel knife as a center, without roughing the face of the sole or producing other ill effects thereon. When the edge gage again moves forward with the knives as they are moved to a position to start a new cut, the coiled spring 116 (Fig. 4) will act upon the work retainer bar to move the work retainer foot '62 again to its inward or normal position.

In the modified form of the invention shown in Fig. 6, instead of mount-ing the work retainer bar for a pivotal movement the work retainer foot 62 is made in two parts, namely, a shank part and a foot proper part, the latter belng mounted upon the former for an in and out movement upper end and this guideway receives a dove-tailed tongue 120 (Fig. 6) at the upper side of the foot proper part. By reason of this connection the sole engaging portion of the work retainer can move rela tively to its supporting rod in a direction across the line of feed. The foot proper part is provided with a. stop 121 which pro jects upwardly and bears against the shank part thus limiting inward movementof the foot. The stop 121 is maintained normally in engagement with the shank part by means of a suitably mounted leaf spring 122. In the operation of the machine the action of this modified form of the invention is similar to the action of the swinging work retainer bar heretofore described. As the edge gage moves back and forth in the direction of the line of feed, the sole and the movable portion of the foot of the work retainer are forced outwardly together across the line of feed against the force of the leaf spring 122 which, after the cut is completed and the edge gage moves forward with the knives in their feeding stroke, again moves the foot proper portion of the work retainer to its inward or normal position upon its shank.

The invention is not limited to the details of construction and operation herein described and illustrated as it will be clear to those skilled in this class of machines and with the general objects of the present invention in view, that changes may be made in the details of structure and the invention be embodied in other forms within the terms and spirit of the appended claims.

Having thus described the invention, what is claimed as new, is

1. A channeling machine, having, in combination, means for supporting a flat sole, a sole ed 'e gage, and work feeding means adapted to engage the sole so constructed and arranged that an excessive pressure of the edge of the sole against the edge gage during the feed will cause a movement of the sole outward from the edge gage across the line of feed, substantially as described.

2. A channeling machine, having, in combination, a work support, an edge gage, and means to hold the work at times against movement in the line of feed but permit its movement at such times relative to the edge gage across the line of feed, substantially as described.

3. A channeling machine, having, in combination, a work support, an edge gage, and work feeding means comprising a reciprocatory feeding device and a vertically movablev work retainer, said work retainer having a work engaging portion movable toward and from the edge gage across the line of feed, substantially as described.

4. A channeling machine, having, in combination, an edge gage, means for imparting a movement to the gage in the line of feed, and work feeding means comprising a reciprocatory feeding device and a work retainer movable into and out of engagement with the work, said work retainer being constructed to permit a movement of the work across the line of feed while engaged by said retainer, substantially as described.

5. A channeling machine, having, in combination, an edge gage, work feeding means comprising a reciprocatory feeding device and a work retainer said work retainer comprising a work engaging portion mounted for both vertical and in and out movement relative to the edge gage, and means for holding, said retainer yieldingly in its inner position, substantially as described.

6. A channeling machine, having, in combination, an edge gage, and work feeding means comprising a reciprocatory feeding device and a work retainer to hold the work at times against movement in the line of feed, said work retainer comprising a vertically movable slide and a work engaging portion having a supporting bar pivotally mounted on said slide for an in and out movement relative to the edge gage, substantially as described.

7 A channeling machine, having, in combination, an edge gage, work feeding means including a work retainer comprising a vertically movable slide and a work engaging portion having a supporting bar pivotally mounted on said slide for an in and out movement relative to the edge gage, and a spring arranged to normally maintain said out movement of said work retainer relatively to the edge gage, a stop to limit the inward movement of the workmetainer gage, and a spring mounted on the lower guide and acting to yieldingly hold the work retainer against said stop, substantially as described.

9. A channeling machine, having, in combination, an edge gage, a reciprocatory sole cutting knife arranged to form a cut on its backward stroke, a knife presser foot mounted to reciprocate with said knife and arranged to feed the sole on its forward stroke, and a work retainer movable toward and from the sole, timed to engage the sole during the cutting operation and hold it against movement in the line of feed but mounted to permit a movement at such times relative to the edge gage across the line of feed, sub: stantially as described.

10. A channeling machine, having, in combination, an edge gage, work feeding means comprising a foot adapted to engage the margin of the sole and mounted to swing outward across the line of feed to relieve the pressure of the sole on the edge gage, and a spring arranged at the front side of the foot bet-ween its supporting bar and the rigid frame to return the foot to its normal inward position, substantially as described.

FREDERIG E. BERTRAND.

Witnesses:

W'ARREN Gr. OGDEN,

ANNIE C. RICHARDSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

